Rotten Tomatoes rating [1]: 21 percent

For a guy who got his start in comedies, Jonah Hill [2]'s choice of comedies to star in was pretty fantastic — think Superbad and Get Him to the Greek — except for this one, 2011's The Sitter. It's not just uninspired, it's unnecessary (the 1987 version, Adventures in Babysitting, is far superior).